blob: 98305ad4748574bf7596f9d112d3c2fa853d3dae (
plain)
| 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 | //go:build gc
#include "textflag.h"
// lifted from github.com/golang/sys and cpu/cpu_arm64.s
// func getisar0() uint64
TEXT ·getisar0(SB), NOSPLIT, $0-8
	// get Instruction Set Attributes 0 into x0
	// mrs x0, ID_AA64ISAR0_EL1 = d5380600
	WORD $0xd5380600
	MOVD R0, ret+0(FP)
	RET
// func getisar1() uint64
TEXT ·getisar1(SB), NOSPLIT, $0-8
	// get Instruction Set Attributes 1 into x0
	// mrs x0, ID_AA64ISAR1_EL1 = d5380620
	WORD $0xd5380620
	MOVD R0, ret+0(FP)
	RET
 |